It's been demonstrated by case studies that a correct implementation of the hreflang attribute increases the search visibility, the indexation rate, the number of impressions and it's fundamental to avoid duplicate content.
Implement the hreflang attribute on any URL of your website by using the Connections menu or use the Hreflang Manager meta box to add the attribute directly to the post being edited.
This plugin can be used to handle networks of sites generated with the WordPress multisite feature or even deployed to connect multiple separate WordPress installations.
With a maximum of 100 different connections per URL you can handle the most intricate situations. Is the world big enough to make you actually use so many different languages or geo-targets?
The import and export feature available in Hreflang Manager allows you to archive your connections as XML files, so you can backup your connections, move your connections between different websites and more.
Hreflang Manager comes by default in English and Italian, if you want to translate the plugin in another language simply create a translation file or manually translate it with a multilanguage plugin.
Support for this plugin is provided in English and Italian directly via email by the plugin developer. If you experience any problems or if you need detailed technical info about specific plugin parts you are in good hands.
This plugin is sold through Envato Market. The type of license and the support period should be selected in the marketplace.